发明授权
US6051715A Method of producing oxazolidinones, the use thereof and novel
oxazolidinones
失效
制备恶唑烷酮的方法，其用途和新的恶唑烷酮
- 专利标题： Method of producing oxazolidinones, the use thereof and novel oxazolidinones
- 专利标题（中）： 制备恶唑烷酮的方法，其用途和新的恶唑烷酮
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申请号： US894519申请日： 1997-08-21
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公开(公告)号： US6051715A公开(公告)日： 2000-04-18
- 发明人: Karlheinz Drauz , Gunter Knaup , Stefan Retzow
- 申请人： Karlheinz Drauz , Gunter Knaup , Stefan Retzow
- 申请人地址： DEX Frankfurt
- 专利权人： Degussa-Huls AG
- 当前专利权人： Degussa-Huls AG
- 当前专利权人地址： DEX Frankfurt
- 优先权： DEX19505932 19950221
- 主分类号： C07C231/14
- IPC分类号： C07C231/14 ; C07C237/22 ; C07D263/18 ; C07D263/04
摘要：
The invention concerns a method of producing oxazolidinones of formula (I), wherein R.sup.1 -R.sup.5 have the meanings given in the description, by reacting cyclical anhydrides of formula (II) with carbonyl compounds of general formula (III) at temperatures between ambient temperature and approximately 150.degree. C. The invention also concerns the production of the cyclical anhydrides of formula (II) by reacting N-protected aminodicarboxylic acids of formula (IV) with a dehydrating agent in situ. The invention further concerns the use of oxazolidinones of formula (I) for the .alpha.-selective production of esters of formula (V) and amides of general formula (VII).
公开/授权文献
- US5316878A Pattern forming method and photomasks used therefor 公开/授权日：1994-05-31
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